Music-sheet turner



vJune ,2-1, 1927. l

' s. HAI-Ml MUSIC SHEET TURNER 3 sheets-sheet 1l y Filed Sept.' l0. 14925 .lime 21,1927.

, S. HALMI MUSIC SHEET TURNER Filed sept. 1o. 1925 s sheets-sheet 2 June 21, 1927. b

s. HALMI MUSlC SHEET TURNER Filed Sept. l0. 1925 5 Sheets-Sheet 3 Iii Patented June 2l, 1927.

' STEVEFHALMI, or YoNKEns, NEW YORK.

'MUSIC-SHEET TURNER.

l Application kfiled kSeptember rlhis inventionrelatesto certain new and useful improvements iny music sheet turners of the type wherein lpivotally supported arms that are manually operated are adapted to be moved into engagement ywith `an edge of a music sheet for swinging ormoving the music sheet from one side of a stand rack or the like to the other side.

An object of the invention is to providea music leaf turner wherein a pairotpivotally supported lever arms associatedwith a music sheet rack are normally tensioned in opposite directions forr lying `adjacent the rack with manually operated devices for the sheet turning arm to selectively movek theV same to the opposite side of the rack to engage the free swinging edge of a music sheet to turn or transfery the latter to the other side of the rack;

A further-'object ofthe invention is to provide in a music leaf turner of thetypeabove described, a tensionedkvpivotally supported magnet upon the outer end of each sheet turning arm having devices associated therewith'for shifting the magnet to a position at right angles to the longitudinal axis of the arm during movement of the arm from its normal position of rest to its operative position at the opposite side of the rack to cause the magnet to contact a metallic clip carried `by the upper free swinging side edgeof a music "sheet,` the magnet constituting the vsheet gripping means with the devices for operating the magnet further causing the latter to assume its normal position longitudinally alined withl the sheet turning arm when the latter approaches 'its normally.in `operative position.

A still further object of the invention is to provide a clasp or gripping finger for the free swinging edges of the music `sheet to hold the same properly positioned upon the music rack, the sheet clamp or gripping finger being operated to release the music sheet when the magnet is moved into position for contai'zt with the metallic clip on the music sheet.

lith the'above and other objects in'view that will become apparent as the nature of the invention is better understood, the same consists of the novel form, combination, and arrangement of parts hereinafter more fully described, shown in the accompanying draw ings and claimed. V

ln the drawings, wherein' like reference 10, 1925. Serial N0. 55,516.

characters designate corresponding parts throughout the same,

Figure l is a front elevational view of a music stand and rack constructed in accordance with the present invention with the sheet turning mechanism. diagrammatically illustrated therein,

Figure 2 is a side elevational view of the stand and rack,

Figures 3 and 4: show fragmentary longitudinal sectional views of the music stand showing the tensioned rod carrying the operating pedals and to which rods cords or cables for operating the sheet turning arms are connected, n

Figure 5 is a top plan view of the music sheet turning mechanism attached to the upper edge rof a music sheet rack showing the tensioned swinging sheet moving arms, the pivotally supported magnet at the outer ends of the arms and the cam members and tensioned rods for shifting the magnet into operative andinoperative positions,

Figure 6 is a front elevational view of the music sheet turningmechanism,

Figure 7 is a top plan view of they mechanismv with the sheet turning arms removed and showing the levers that control operation of the music sheet retaining or gripping lingers,

Figure S is a Ylongitudinal sectional view showing the under side of the sheet turning mechanism and illustrating the manually operated cords for shiftingl the sheet turning arm, i

Figure 9 is a fragmentary side elevational view of one of the sheet turning arms showing the magnet extended in alinement with the arm,

Figure l0 is a vertical detail sectional view showing the cam members with which the turning arms are associated and the manually slidable raclrs engaging the pinions car-l ried by the turning arm for operating the latter,

Figure 1.1 is a fragmentary longitudinal sectional view showing the rack and pinion for operating the sheet turning arms and the cam guides for the devices that shift the iagnets, i

Figure 12 is a fragmentary top plan view showing the magnet head of the tensioned rod that is attached. to the magnet riding on the flat wall between the cam edges with which the tensioned rod head is associated,

Figure 18 is a similar detail view showing the tensioned rod head shifted onto one of the cani edges,

Figure 1st is a detail sectional view taken on line :illy-Klv ot Fig. showing the tensioned music sheet gripping linger tor retaining the music sheet upon the rack,

Figure is a detail sectional view taken ou line XV-V ot' Fig. 5 showing the trigger rod ass elated with the music sheet clamping linger to operate the same and which in turn is engaged by the sheet turning arm,

Figure 1G is a detail sectional View, similar to Fig. 1s showing the sheet gripping linger in its open or releasing position,

Figures 17 and 18 show side views ot the adjustable clamping head between the music stand and raclr7 and Figures 19 and 2O show fragmentary Yfront and edge elevational Views ot' a music sheet with a metallic clip upon the upper edge thereotl to be engaged by the magnet.

Referring more in detail to the accompanying drawings, there is illustrated a music sheet turner associated with a sheet rack, generally designated by the reference numeral 1 that is angularly adjustable upon standard 2 that is supported by folding legs 3 that are braced by the rods L1 extentiing between the same and the standard as shown in Figs. 1 and 2. The music sheet rack 1 is in the form ot a skeleton fame having upper and lower horizontal rails 5 and (5 respectively, and rails 7 and intermediate brace and sheet supporting'rails 8. As shown in Figs. 27 17 and 18 the music rack 1 is capable ot angular' adjustment upon the upper end ot the standard 2, the raclr anl standard carryingcooperating blocks 9 and 10 having interengaging ratchet laces that are secured in adjusted angular positions by the bolt 11 passing therethrough.

rl`he music sheet turning mechanism embodies a pair ot tensioned arms that are manually opeatcd through the medium of cords attached thereto and extend into the standard 2 tor attachment to tensioned rods which carry pedals at their lower ends below the standard and spaced above the floor or other support. To support the sheet turning arms and the mechanism associated therewith, there is provided a channel frame haring an upper wall 12 carrying a depending edge flange 13. the opposite ends oi the supporting frame having arm connections 111 with opposite ends ot' the upper rail 5 of the music sheet rack. Arcuate channel guides 15 extend 'from the supporting tramo 12 to the upper end ot the standard 2 for purposes presently to appear.

As shown in Fig. 5, a pair ot spaced bearing supports 1G project upwardly from the wall 12 ot' the channel trame that supports a shaft 17 adjacent the upper ends thereol above the wall 12 and upon which shaft thc inner ends of a pair ot' music sheet turning arms 18 and 19 are journaled. The arms 18 and 19 normally occupy positions adjacent to and parallel with the wall 12y the same being tensioned to occupy such positions by the band springs 20 coiled around the shaft 17 with the inner ends thereot' secured to said shaft while the outer elias are anchored to pins 21 carried by the sides of the sheet turning arms.

The mechanism t'or moving or swinging the arms 18 and 19 trom the normal positions shown in Fig. 5 to the opposite sides of the supporting frame wall 12 shown more clearly in Figs. 8, 10 and 11 wherein the inner journaled end of each turning arm 18 and 19 is provided with a pinion extending downwardly through elongated slots 23 formed in the wall 12 of the supporting frame shown in Fig. 7 for meshing engagement with rack bars 2-1 slidably mounted in hanger guides 25 depending from the lower tace of the frame wall 12. Operating cords 26 and 27 are attached to the sliding rack bars 2st, the cords 2G and 27 being directed outwardly and confined by the channel supporting trame to pass over guard pulleys 28 and returned inwardly lor passing through the channel guards 15 for attachment at their other ends to the upper ends ot' rods 261 and 27n that are slidable in the standard 2.

As shown in Figs. 1 to al, the standard 2 formed ot' extensible Isections 29 and 3U held in adjusted positions by the screw 31 while the poll rods 2G and 27 extend downwardly through openings in the bottom ot the standard section 3() and are provided with pedals 2Gb and 27b respectively. ln order to retain the pedals 26b and 27b at their limits ot upward movement and also permitting the music sheet turning arms 18 and 19 normally to occupy their inoperative positions as shown in Fig. 5, the rods 6? and 26b are surrounded by expansion coil springs 32 disposed between the bottom wall ol the standard section 39 and collars 33 that are adjustably secured to the rods` 26"L and 27a by set screws 34, the bearings 35 tor the set screws extending through registering slotted openings 36 'formed in the telescoping parts of the standard sections 29 and 8O to permit longitudinal shitting movements ot the rods 262 and 27a. It will also be understood that by adjusting the collars 33 upon the rods 2G and 27", slacl: in the cords 26 and 27 may be taken up to insure pert'cct operation oil the sheet turning arms 18 and 19 when the pedals 25" and 27" are lowered.

A music sheet, such as a book or the lilte is mounted upon the rack 1 with the upper edges ot the'sheet lying adjacent the upper rail 5v of the rack, each sheet 37' as shown infFigs. 19 aud 2O carrying a metallic clip or plate 38 at each side of the' upper edge for cooperation with a magnet associated with the sheetfturning arms 18 and 19. yAs shown more clearly in Figs. 5 and 9 to 13, each of the arms 18 and19 yis provided with a pair of spaced apertured guide brackets 39 and 4() through which 'a rod 41 is slidably mounted. An' angle arm 42 is fixed to the yother' .end of each rod and has a pin/aud arcuate slot connection '43 'with the inner end of the leg 44 ofthe magnet 45, the leg 44 of the magnet being pivoted as at46 within the channel arm extension 47 of each sheet turning arm. A coil spring 48 surrounds the rod 41 between the bracket bearings 39andf40, one end of the spring being attached to the bracket bearing 39, while the other end thereof is attached to the angle arm. 42 for normally holding the leg 44 of the magnet ywithin the channel extension arm 47 and in alinement with the carrying sheet turning arm. A head 41 is carried by the inner end of each rod 41 and has the free end thereof forked or bifurcated to provide relatively long andv short .fingers 49 and '50.for cooperation with cam surfaces to bey described.

,A cam device is associated with each head 41. of the tensioned rods 41 to cause longitudinal movement of the rods relative to the supporting sheet turning arms 18 and 19 when the latter are-moved for moving the legs 44 of the magnet upon their pivotal mountings 46 to dispose the magnetv legs at right angles to the longitudinal axis of the carrying arm and to position the magnet for. contact with themetallic clip 38 upon the music sheet 37 to carry or turn the music sheet from one side of the rack 1 to the other `side thereof. i The cam devices are shown more clearlyin Figs. 5, 6, 1() and 11 and includearcuate cam strips 51 having their'lower ends secured to the wall 12 of the supporting, frame at opposite sides ofthe bearing brackets 16 fory the shaft 17. lVhen the sheet turning arms 19 are in their inoperative positions shown in Fig. 5 the heads 41 upon the tensioned rod 41 extend inwardly of and adjacent to the arcuate cam strips 51 with theinner forked ends thereof engaging the arcuate camr walls52 ywhich extend upwardly from the/wall 12 andterminate at a point substantially midway the ends of the cam strip. The inner edge of each cam wall 52 carries an upstanding guide flange 53 having the' end 54 thereof termi natingat the end of `the cam wall 52and slightly bent toward the adjacent cam strip 51. The upper end of thecam wall 52 ap-4 proaches the edge of the cam strip 51 while the inturned end of the flange 54 projects above the guide cam strip. It will, therefore, be seen that when either ofthe sheet l the rack 1.

turning arms 18 or 19 is operated by swinging the same upon the supportingshaft 17, the block 41 upon the teusioned rod 41 will ride upwardly upon the cam wall 52 and when the longer finger 49 upon the bifurcated end of the head 41 engages the inturned end 54 of the guard flange, the

head 41 is laterally shifted with the short linger 5() thereof passing over the edge of the cam strip 51 to cause the bifurcated end of the block to straddle the cam strip and at which time the rod 41 will be projected to dispose the magnet leg at right angles to the longitudinal axis of the carrying arm as shown in Figs. 12 and 13. The magnet leg will remain at right angles to thecarrying sheet turning arm until the latter assumes the position adjacent the wall 12 and at which time the cutout portion 55 atthe lower end of the cam strip 51 will permit the coil spring 48 upon the rod 4,1 to shift the latter and the block 48 to the position shown in Fig. 5 and to longitudinally extend the magnet leg in alinement with the arm.

To hold the music sheet in positon upon the rack 1, there is provided a clamp arm carried by each end of the wall 12 of the supporting frame that engages the upper rail 5 of the rack to clamp the upper edges of the music sheet onto the rack and said clamping arms are operated to be moved to releasing positions when the magnet 55 engages the music sheet for turning the same. The music sheet holding devices include a pair of rectangular frames 56 and 57 disposed respectively at the outer ends of the frame wall 12 and at points spaced inwardly thereof with a shaft 58 journaled in the rec-- tangular frames 56 and .57 as shown in Figs. 14 to 16. As shown in Fig. 14, a lever 59 has one end thereof pivoted to the adjacent end of the shaft 58 while the other endof the lever 59 is pivotally connected to a link 60 that extends upwardly through a slotted opening 61 in the frame wall 12 while the other end of the link 60 is pivotally altached to an arm 62 that has its lower end fixed to the clamp arm 63. This clamp arm is pivotally supported as at 64 upon the ad jacent side flange 13 lof the supporting frame with the free end `of the clamping arm ('33 overlying and engaging the upper rail 5 of The other end of eachy shaft has a lever 65 .fixed thereto as shown in Figv 15 while a plunger rod 66 is fixed-to the free end` of .the lever 65 and extends upwardly through the slotted opening 67 in the frai -f wall12. As shown in Fig. 14, an arm 68 projects forwardly of the rectangular frame 56 and a coil spring 69 connects the outer end of the arm 68 to the clamping arm 63`for normally holding the clamping arm in position upon the rail 5 of the rack 1 and with the plunger rod 66 at its limit of upward that when the latter moves in directions toward the 'trame wall 12, the plunger rods titl will he lowered to operaie the shalft S and elevate the respective clamping arms (33.

rlie plunger rods Go heine; in the path oit movement ol' the sheet turning arms When the latter are moved toward the trame Wall 12. devices are associated vvith the plunger rods and magnet lees ll to laterally fshitt the plunger rods ug mst the tension et the springs 79 to position the plunger rods laterallv ot the sheet turning arms and to permit the music sheet clampingl arms 623 to he moved to closed position such devices being shoun more clearly in 7. )i lever 72 pivoted as at upon the trame u'all 12 is engaged hv one o'l.E its ends bj' the adjL cent plunger rod Gti, pivotal movement of the opposite end ot the lever heing limited hv the stop pin 74. The end ot the lever 72 adjacent the stop pin 7l carries a perpendicular extension linger 75, and a similar' structure embodying a pair ot' levers 76 and 77 pivoted together at their adjacent endsand also pivoted intermediate their ends as at 78 has the lever 7 G engaged h v the adjacent plunger rod G6 vhile the lever 77 cooperates With the sinh pin 79 and further carries an upsianding extension linger 80. For purposes presenti)1 to appear, the sheet turning arm 19 carries a pair of lateralljvY directed flanges 81 and 82 at the upper and lower sides ot the arm at opposite sides ot the tensioned rod 'll, While a similar flange 8B shoivn .in 5 carried hv the loiver side edge oll the arm 1S and projects laterali)1 therefrom.

lffhen the music sheet turning arms 18 and 19 are in the position shown in Fig'. 5, the plunger rods 6G project upvvardlj.'v and laterally of the adjacent sheet turning arm a minst the tension or the springs 70 associated thereu'ith, the plunger rods being then disposed :in the path o'l movement oli the remote sheet turning arms. lt being understood that the music sheets are supported upon the loiver rail G ot the raclr 1 with the upper edges of the music sheets engaged by the clamping arms 63 overlying the upper rail 5 of the rack, and it heing desired to turn or shi'lt a music sheet t'ron'i the lett side ot' the rack to the right side thereoffv the pedal 2T is engaged hf; the toot ot a person to he compressed to louer the rod 27"1 against the tension ot the spring 32 and to pull upon the cord 27 attached to the associated rack har Movement of the raci; har 2st operates the pinion 22 to move the sheet turning arm 19 upon the sha'l't '1.7. lVhen the arm 19 is slightljv raised to become disengaged i'rom the adjacent plunger rod (3(5, the spring 70 associated with the plunger rod moves the same to the opposite end of the slot adjacent the tree swinging end ont' the trip lever 76 as shov-:n in Fig. T. lhu'iug continued movement oi the arm 19, the hloclt or head Ll1" upon the tensioned rod l1 rides over the Cain surface and when the block l1 reaches the end of the cam sur'lace 52, the rod l1 will have heen projected to dispose the leg` to the longitudinal axis oli the arm 19. At this moment, the slightly inturned end 5st et the hell vflange 53 carried hy the inner side ol.l the cam l.race 52 will engage the block itl upon the tensioned rod ell to shitt the same laterallxv7 and the shorter linger 50 of the hiliurcated end ol the hlocli 11n Will pass over the edge of the cani strip 51 to cause the hiilurcated end ot the block Al11 to straddlo the cam strip and ride thereon with the magnet maintained in its angularly disposed position. Continued movement o'f the arm 19 vvill cause the flange 81 carried by the side thereof to engage the plimgcr rod G6 associated with the, sheet turning arm 18 to lower the plunger rod and operate the shalt and through the s vstem ot links and levers above described, the sheet clamping arm 633 Will he elevated to lree a sheet of music theretron'i. The magnet 55 heiu'g then moved into engagement vvith the metallic clip Q" upon the music sheet 37 will carry UO the music sheet to the other side olf the rack when pressure on the pedal 27 is relieved and at which time the coil springs 32 associated with the rod 2T Will lou'er the rod and pull upon the cord 27 to return the arm 19. Also, the hand spring` associated with the arm is placed under tension when the arm is moifed to its sheet gathering poffzition and cooperates vvith tle spring 32 ior returning the arm to its original position shown in Fig. It being understood that the plunger rod 6G associa ed with the arm 19 has heen moved to the end ot the slot 67 acjacent the lever the same is in the path of movement or' the ilange S2 upon the arm 19. The flange upon the arm 19 engaging the plunger rod GG will operate the shat't 58 to raise the clamping arm 33 so that the sheet oil? music carried over bv the arm 19 Will he disposed beneath the clamping arm. lllnen the arm 19 reaches a position in proximitjr of the 'trame Wall 125 the head el. upon the tension rod ill will escape through the cutaway1 portion 55 of the cam strip 51 and the spring -l-F will move the head`l1L into engagement With the cam Wall 52 and at vvhich time the hlll. ol the magnet will swing upwardljv7 to a position alined with the arm 19 and in so doin;r uill strilfe the linger S9 upon the lever 77 and pivotal move- -ill of the magnet 55 at right angles LIU ment of the lever 76 that engages the adjacent plunger rod (3G will cause the latter' to be shifted and disposedlaterally of the sheet turning arm 19 and permit the plunger rod to be elevated through the .slot 67 and a consequent lowering to its operativelposition of the clamping arm 68. v This plunger rod 66 is then in position to beeugaged by the side wally of the sheet turning arm 18.

Substantially the same operation is effected in moving the sheet turning arm 18, the pedal 26" being operated forinoving said arm and when the arm 18 approaches the arm 19, the side of the arm 18 engages the plunger rod 66 associated with the arm 19 to lower the same and elevate the clamping arm G3. The leg i4 of the magnet 55 7car ried by the sheet turningl arm 18 is thrown to its angular position when riding over the cani surfaces and engages the metal 4clip at the upper end of the sheet to turn the .same from the right hand side of the rack to the left hand side thereof. WThen the arm 18 is swung upwardly, the plunger rod 66 associated therewith is moved by the spring to the opposite end of the slot to be in a position for contact by the flange 83 upon the arm 18 for operatingl the adjacent sheet clamping arm 68 andthe plunger rods 66 associated with the sheet turning arm 18 is restored to the full line position shown in Fig. 5 and the magnet leg 54 is shifted by its spring 48 to engage the finger 7 5 upon the lever 72 and causethe lever to throw the plunger rod 66 toward the vopposite end of the slot so that the plunger rod may be elevated by the spring 69 that closes clamping arm G8. The sheet turning arm 19 is employed 'for transferring sheets of music from the left side of the rack tothe right sidethereof While the sheet turning arm 18 employed for moving the music sheet from ythe right hand side of the rack tothe left side thereofl and the sheet turning arms 18 and 19 are independently operated by the pedals 26"v and 27?. ,l

From the above detail description of the invention, it is believed that the construction and operation thereof will at once heapparent, and While there is herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein Without departing from the spirit "and scope of the invention as claimed.

That is claimed is 1. In a music sheet turner, the combination with a music rack, of a pair of sheet turning arms, operating cords associated with the arms, a magnet carried `by each arm to contact a metallic clip on a music sheet to move the sheet from one side of the rack to the other side, said magnet normally occupying a position alined With the carrying arm, said magnet being pivotally supported, a tensioned sliding rod attached to the magnet and slidable on the arm and a stationary cam device associated with the rod for moving the magnet.

2. ln a music sheet tuner, the combination with a music raclr, of a pair of sheet turning arms, operating cords associated with the arms, .sheet clan'iping means at each end of the rack, operating means for the clamping means separate from the sheet turning arms at each end of the racl: and a part of the operating means being arranged in the path of movement of the arms to be operated thereby. c

In a music sheet turner, the combination with a music rack, of a rair of sheet turning arms, operating cords associated with the arms, sheet clamping means at each end of the rack, operating means at each end of the rack for the clamping means and a` part of the operating means being arranged in the path of movement of the arms to be operated thereby, a pivoted magnet carried by each arm and a cam device associated with the arm and magnet to cause the magnet to be moved into contact with a metallic clip on a music sheet during movement of the arm and said magnet being releasable from the cam to move theppart of the operating means out of the path of movement of the arm and permit closing of the sheet clamping means.

L1. In a. music .sheet turner, the combination with a music rack, of pair of sheet turning arms, operating cords associated With the arms, sheet clamping means at' each end of the rack, operating means at each end of the rack for the clamping means and a part of the operating means being arranged in the path of movement of the arms to be operated thereby, a pivoted magnet carried by each arm adapted to be moved into contact with a metallic clip on a music sheet during movement of the arm andreleasable to nieve the part of the operating means out of the path of movement of the arm and permit closing of the sheet clamping means, the operating means for the magnet comprising a cam device including a cam track and rod interposed between the trackl and magnet for operating the magnet and further constructed to permit the return movement of the` magnet when the arm reaches its limit of movement over the cam track ,during the turning of a music sheet.

5. rIn a music sheet turner. the combinaH tion with a music rack, of a pair of tensioned sheet turning arms, a shaft pivotally supn porting the same, a pinion .fixed to each arm and journaled on the shaft, a sliding rack bar meshing with each pinion, operating cords attached to the rack bars, a sheet .clamp at each end of the music rack, separate operating means for each clamp, a part of the operating means being arranged in the path ot movement ot the arms and a sheet carrying magnetcarried by each arm adapt-ed to engage said part oil the operating means to move the same transversely et the arm and permit closing ot the sheet clamp.

G. ln a music sheet turner, the combination with a music rat-lr, oit a pair ot tensioned sheet turning arms, a shalt pivotally supporting the same, a pinion iiied to each arm and journaled on the shatt, a sliding rack bar meshing with each pinion, operating cords attached Vto the rack hars, a sheet clamp at each end ot the music raclt, separate operating means tor each clamp, a part of the operating means being arranged in the path of movement ot the arms, a sheet carrying magnet carried by et ch arm adapted to engage said part Ot the operating means to move the same transversely ot the arm and lermit closing olAv the sheet clamp, the magnet being pivot-ally siuiportetl on the arm, a tensioned rod on the arm connected to the magnet and a cani device associated with the rod tor moving the magnet into sheet engaging position and permitting return thereot' for operating the part of the operating means.

7. In a music sheet turner, the combination with a music rack, ot a pair ot sheet turning arms, operating cords associated with the arms, sheet clamping means at each end ot the rack, operating means at each end oil' the rack for the clamping means and a part ot' the operating means being arranged in the path ot movement of the arms to be operated thereby, a pivot-ed magnet carried by each arm adapted to be moved into contact With a metallic clip on a music sheet during` movement et the arm and releasable to move the part of the operating means out ot the path et movement ot' the arm and permit closing ot' the sheet clamping means, the operating means tor the magnet comprising a cam device tor operating the magnet constructed to permit the retur'n movement ot the nagnet Vwhen the arm reaches its limit ot movement during the turning ot a music sheet, the operating means including a journaletl shaft, a trame supporting the same7 a lever and linl; connection bet-Ween the shaitt and sheet clamp, a slnfing Ytor normally holding the clamp onto the sheet racl: and said part ot the operating means in the path ot movement ot the arm embodying a plunger rod having a lever connection With the shaft.

8. In a music sheet turner, the combination with a music r cli, ol a pair ot tensioned sheet turning arms, a sha'tt pivotally supporting the same, a pinion fixed to each arm and journaled on the shaft, a sliding rack bar meshing With each pinion, operatJ ing cords attached to the rac t hars1 a sheet clamp at each end ot the music rack, separate operating means for the clamp, a partot th-e operating means being arranged in the path oi movement of the arms, a sheet carrying magnet carried by each arm adapted to engage said part ot the operating means t0 move the same transversely ot the arm and permit closing ot each sheet clamp, the operating means including a journaled shaft, a trame supporting the same, a lever and linl; connection between the shait and sheet clamp, a spring tor normally holding the clamp onto the sheet rack and said part o'll the operating means in the path of movement ot the arm embodying a plunger rod having a lever connection with the shalt.

9. ln a music sheet turner, the comhiuation with a music rack, ot a pair,l of tensioned sheet turning arms, a shaftt pivotally supporting the same, a pinion lixed to each arm and journal/ed on the shat't, a sliding racl;

bar meshing With each pinion, operating cords attached to the rack bars, a sheet clamp at each end of the music rack, separate oL erating means for each clamp, a part ot the operating' means being arranged in the path ot movement ot the arms, a sheet carrying magnet carried by each arm adapted to engage said part ot the operating means to move the same transversely ot the arm and permit closing ot the sheet clamp, the magnet being pivotally supported on the arm, a tensioned rod on the arm connected to the magnet, a cam device associated with the rod tor moving the magnet into sheet engaging position and permitting return thereoll for operating the part ot the opt-nfatiiml means, the operating means including a journaled shaft, a trame supporting the same, a lever and link connection between the sha tt and sheet clamp, a spring tor normally holding the clamp onto the sheet rack -ind said part ot the operating means in the path oll moveinent ot the arm embodying a plunger rod having a lever connection with the shalt.

l0. In a music sheet turner, th-e cou1bination with amusic rack, ot a pair ot sheet turning arms, pedal operated cords associated vvith the arms, sheet clamping means at each end ot the rack, operating means at each end ot the rack tor the clamping ine-ans and a part ot the operating means being` arranged in the path et movement ot the arms to be operated thereby, a pivoted magnet carried by each arm adapted to be moved into contact with a metallic clip on a music sheet during movementol the arm and releasable to move the part ot the operating means out of the path of movement of the arm and permit closing ot the sheet clamping means, the operating means tor the magnet comprising a cam device ilor operating the magnet constructed to permit the return movement of the magnet when the arm reaches its limit ot movement during the turning of a music sheet, the operating Elfi kmeans including a journaled shaft,a frame supporting the same, a lever and link conncction between the shaft and sheet clamp, a spring for normally holding the clampY onto the sheet rack and said part of the operating means in the path of movement of the arm eml'iodyingl a plunger rod having a lever connection with the shaft, and a lever adapted to be engaged during the return. movecords attached to the rack hars, a sheet clamp kat each end of the music rack, separate,operatingfmeans for each clamp, a pair of the operating means being arranged in the path of movement `of the arms, a sheet carrying magnet carried by each arm adaptedr to engage said Ipart of the operating means to move the same transversely of the arm and permit closing of the sheet clamp, the operating means including a journaled shaft, a frame supporting the same, a lever and link connection between the shaft and sheet clamp, a spring for normally holding the clamp onto the sheet rack, said part of the operatimq` means in the path of movement of the arm embodying a plunger rod having a lever connection with the shaft, and a lever adapted to be engaged during the return movement of the magnet to transversely displace the plunger rod.

12. In a music sheet turner, the combination with a music rack, of a pair of tensioned sheet turning arms, a shaft pivotally supporting the same, a pinion iXed to each arm and journaled on the shaft, a sliding rack bar l'neshing with each pinion, operating cords attached to the rack bars, a sheet clamp at each end of the music rack, separate operating means for each clamp, a part of the operating means being arranged in the path of movement of the arms, a sheet carrying magnet carried by each arm adapted to engage said part of the operating means to move the same transversely of the arm and permit closing of the sheet clamp, the magnet being pivotally supported on the arm, a tensioned rod on the arm connected to the magnet, a cam device associated with the rod for moving the magnet into sheet engaging position and permitting return thereof for operating the part of the operating means, the operating means including a journaled sha-ft, a. frame supporting the same, a lever and link connection between the shaft and sheet clamp, a spring for norn'ially holding the clamp onto the sheet rack and said part of the operating means in the path of movement of the arm embodying a plunger rod having a lever connection with the shaft, and a lever adapted to be engaged during the return movement of the magnet to transversely displace the plunger rod.

vi3. In a music sheet turner, the combination with a music sheet rack, of a pair of sheet turning arms, a shaft upon which the arms are journal/ed, a support-ing frame for the arms, a spring associated with each arm for normally holdingthe same in inoperative positions adjacent the frame, a rack bar and pinion associated with each arm, an operating cord attached to each rack bar, a pivotally mounted sheet clamping arm at cach end of the music rack, separate operating means for each clamping arm including a spring pressed plunger rod projecting upwardly through the supporting frame, there being a slot in the supporting frame for thc passage of the plunger rod, a spring associated with each plunger for normally moving thc same toward one end of the slot and to position the plunger rod beneath the adjacent sheet turning arm when the latter is moved away from the supportingframe during operation, Vand cooperating means carried by the arm and supporting frame to shift the plunger rod to a position laterally of the sheet turning arm after opening movement of the clamping arm to permit upward movement of the plunger rod and closing movement of the clamping arm and to position the plunger rod in the path of movement of the other sheet turning arm.

14. In a music sheet turner, the combination with a music sheet rack, of a pair of sheet turning arms, a shaft upon which the arms are journaled, a supporting frame for the arms, a spring associated with each arm for normally holding the same in inoperative positions adjacent the frame, a rack bar and pinion associated with each arm, an operating cord attached to each rack bar, a pivotally mounted sheet clamping arm at each end of the music rack, separate operating means for each clamping arm including a spring pressed plungerrod projecting upwardly through the supporting frame, there being a slot in the supporting frame for the assage of the plunger rod, a spring associated with each plunger for normally moving the same toward one end of the slot and to position the plunger rod beneath the adjacent sheet turning arm when the latter is moved away from the supporting frame during operation, `cooperating means car,- ied by the arm and supporting frame to shift the plunger rod to a position laterally of the sheet turning arm after opening movement ofthe clamping arm to permit upward movement of the plunger rod and closing movement of the clamping arm and to position the plunger rod in the path of movement of the other sheet turning arm, said cooperating means including a magnet pivotally carried by the sheet turning arm, a tensioned rod slidably carried by the sheet turning arm connected to the magnet and a cani deviee carried by the supporting traine cooperating with the tensioned rod.

l5. in a music sheet turner, the combination with a music sheet rack, of a pair of sheet turning arms, a shaft upon Which the arms are journaled, a supporting frame :tor the arms7 a spring associated with each arm for normally holding the same in inoperative positions adjacent the traine, a rack bar and pinion associated with each arm, an operating eord attached to each rack bar, a pivotally mounted sheet clamping arm at each end of the music rack, separate ope ating means for eaeh clamping arm including a spring pressed plunger rod projecting upwardly through the supporting traine, there being a slot in the supporting trame for the passage of the plunger rod, a. spring associated with each plunger :t'or normally moving the same toward oney end of the slot and to position the plunger rod beneath the adjacent sheet turning arm When the latter is moved away from the supporting traine during operation, cooperating means carried by the arm and supporting traine to shift the plunger rod to a position laterally ot' the sheet turning arm after opening movement ot' the cian'iping arm to permit upward movement oi" the plunger rod and closing movement ot the clamping arm and to posi# tion the plunger rod in the path ot movement of the other sheet turning arm, said cooperating means including a magnet pivotally carried by the sheet turning arm, a tensioned rod slidably carried by the sheet turning arm connected to the magnet, a cam device carried by the supporting 'traine cooperating With the tensioned rod, said cam device enibodying an arcuate cam Wall over which the tensioned rod rides and an arcuate cam strip associated with the earn ialls to receive the tensiened rod and retain the magnet in its shifted position with the tensioned rod released trom the am strip when the sheet turning arm is returned to a position adja cent the supporting trame.

ln testimony whereof I aflix my signature.

STEVE HALMI. 

